If it worked like this…alter the photograph, sit through an ad, select a new photograph, sit through an ad, save the photograph, sit through an ad...that would almost be okay for a free app. But, WHILE you are altering the photograph, your process is halted and erased by THREE OR FOUR ads in a row. And, if you DO manage to get through the process, and save your altered photo, your photos are the lowest quality possible.
Ignore this app.